doma was a law passed by the house and senate and signed into law by president clinton. and in our system of government, the administration doesn't get to decide what's constitutional. the supreme court does. >> and it will. starting tuesday. a constitutional law expert, nyu, and the president of founder of freedom and the right leaning heritage foundation. thank you to all of you for being here. folks who haven't followed this case as closely, how did we get here and why of these two cases being heard so close together? >> beginning with the second question, serendipity they're being heard together. winded they're way up through separate passes of the country to converge at the supreme court. the first case, perry case heard tuesday is a prop 8 case a state restriction on same-sex marriage. whereas the case herd wednesday, the defense of marriage act, whether or not federal benefits vts to be afforded to the same as couples married in their home states. >> the pew research poll showing support for same-sex marriage, it's grown in the last ten years. especially generatio